And manceillia



(No Model.)

W. W. ALEXANDER & M. C. GILLHAM.

MEGHANIGAL TELEGRAPH SOUNDBR.

Patented Dec. 15, 1896 WZZZZ'SSES dad/72 A 5y filaddmxlliorney.

NITED STATES PATENT Erica;

\VILLIAM \V. ALEXANDER, Oh KANSAS CITY, MISSOURI, AND MANCEILLIA C.GILLIIAM, OF KANSAS CITY, KANSAS.

MECHANICAL TELEG RAPH-SOUNDER.

SPECIFICATION forming part of Letters Patent No. 572,945, dated December15, 1896.

Application filed April 23,1894. Renewed May 18, 1896: Serial No.592,072! N0 model- To aZZ whom it 77mg concern:

Be it known that we, \VILLIAM W. ALEX- ANDER, residing at Kansas City,in the county of Jackson, State of Missouri, and Mnnonrn LIA O. GILLHAM,residing at Kansas City, in the county of \Vyandotte, State of Kansas,citizens of the United States, have invented certain new and usefulImprovements in Mechanical Telegraph-Sounders, of which the following isa specification, reference being had therein to the accompanyingdrawings.

Our invention relates to a mechanical apparatus whereby signalstransmitted by the electric telegraph may be accurately received andsounded without any local battery. As is well known ,signals transmittedby the electric telegraph are received by means of an electric soundingdevice operated by the electrical energy supplied by a local battery.The efficiency of the electric sounding device is generally dependentupon the energy supplied by the local battery and the perfect conditionof the electrical contact-points, as well as perfect adjustment of thetelegraph-relay. If the line-current becomes impaired by partial ground,leaks, or low condition of line-battery, or the line adjustments are bador the contacts are oxidized, the signals transmitted, if received, aresounded imperfectly, and therefore not understood. The local battery istroublesome, unreliable,and expensive, and the sounder being constantlyaffected by the variableness of the energy of both line and localbatteries and having more or less mag netic lag frequently fails tosound the transmitted signals accurately.

It is the purpose of our invention to provide a simple mechanicalapparatus of peculiar construction having a uniform source of mechanicalenergy for operating a telegraph signaling instrument according to andin unison with the electric signals transmitted by means of accuratelyresponding mechanism so organized that every vibration of the armatureof the relay-magnet will be accurately sounded and with uniform energyand distinctness. These purposes we accomplish by the means illustratedin the accompanying drawings and hereinafter fully described, the samebeing definitelypointed outin the claims following the specification.

In said drawings, Figure 1 is a side elevation of a telegraph-sounderconstructed in accordance with our invention, one of the sides of theinclosing frame being removed and the other sides shown in section. Fig.2 is a transverse vertical section of the same. Fig. 2 is a longitudinalsection of the hair-spring shaft and its supports.

In said drawings the supporting-base for the mechanism is shown at B andrests upon and is secured to a base-board B upon which are also mountedthe relay-magnet M and the pivot-bearing A of the armature A. The upperend of said armature is united by means of a connecting-rod R with thelower end of a substantially vertical lever R that is pivotally mountedupon a horizontal shaft r having its ends journaled in vertical platesC, one of which may form one of the sides of the frame C that inclosesthe mechanism. The lever B is allowed to oscillate with its pivot-shaft4' but to regulate the angle of its oscillation its upper end is locatedbetween two adjustable stops L and L that are in the form of screwshaving their points toward said lever,'said screws being received inlugs pendent from the top' of the frame 0 but said lugs may project fromother parts of the frame.

The pivot-shaft r of the lever B is provided with arms S and S rigidlyattached thereto radially, but divergent from each other, asescapement-pallets, and the outer ends of said arms are bent in the formof hooks to adapt them to act as detents. To the side of the lever Ropposite that occupied by the rod R is attached one end of a retractilespring that has its opposite end connected to the upper end of apivotallymounted lever R Said lever is pivoted at r to a bearingprojecting inwardly from the frame C and has its lower end bearingagainst the point of an adj Listing-screw R.

D represents a gear-wheel rigidly secured upon a shaft d, to which isattached a crankhandle (1 by which it may be revolved in the directionshown by the arrow on the wheel D, a spring-pawl D being shown inengagement with the teeth of said wheel; but it must be understood thatsaid wheel D can be rotated by any well-known means, such ICO as apowertrain, or by belts or sprocketchains passing around pulleys mountedupon its shaft and suitable devices rotated by compressed air, steam, orother power.

The gear-wheel D meshes with a pinion I, loosely mounted upon a stud 17,secured to the frame C Said pinion has rigidly fastened to its innerface an arm P the free end of which is bent parallel with the stud p andhas adjustably secured thereto the outer end of a hair-spring H. Theinner end of said spring is secured to a collar rigidly attached to ashaft H and said shaft has one end tubular and mounted upon the end ofthe stud 1),

while the opposite end of the'shaft is supported by a hanger H securedto the under side of the sounder Q.

Rigidly fastened to the shaft 11 are two detaining-arms h and 72,2,arranged diametrically, but the outer end of the arm 71/2 is bentslightly to one side, so as to engage alternately with the two pallets 2and 4 of a stoppinion M, the arm 7L being adapted to engage with theother two pallets 1 and 3 of said stoppinion. Said pallets 1 and 3 arein a plane in the path of the arm 71, while the pallets 2 and 4 are inthe path of the bent end of the arm 7L2, and consequently in a planealong side of the plane of the pallets 1 and 3. The stop-pinion m ismounted upon and attached to a shaft m and upon said shaft are alsodiametrically mounted two arms 92- and 41 which are in the same planewith the oscillating arms S and S of the shaft 4' and alternately comein engagement with said oscillating arms. Upon the inner end of theshaft 11 is attached a crank 7L3, having pivoted thereto aconnecting-rod t in a substantially vertical position. To the upper endof said rod 25 is pivotally attached one end of a spring 25 having itsopposite end rigidly secured to the lower end of a rod t and the latterrod has its upper end rigidly attached to the sounder-lever T. Saidlever has one end pivoted at q to a standard mounted upon the sounder Q,while its opposite end is adapted to vibrate vertically between the armsof an angular frame Q secured upon the sounder. The upper arm of saidframe carries an adjustable stop 1 above the free end of thesounder-lever T, and said lever also carries an adjustable stop gadapted to rest upon the lower arm of the frame Q The object of thespring 25 on the lower end of the rod i below the sounder-lever is tocushion the blow imparted to said sounderlever and to permit themovement of said lever without releasing the energy of the hairspring H,and thus prevent shocks to the mechanism.

The operation of the apparatus is as follows, viz: In Fig. 1 therelay-armature is shown as attracted by the magnet M against the tensionof the retractile spring R Now if the magnet M is discharged the springR will pull the pivotally-mounted rod R until its upper end restsagainst the limiting-stop L, thus allowing the arm S and the arm n to bedisengaged by the propelling energy of the spring H and the arm n tomove in engagement with the arm S. The stop-pinion on making aone-quarter revolution, the arm h moves from engagement with the pallet1 of the stop-pinion in and the arm 71 moves into engagement with thepallet 2 of said stoppinion 'm, thereby allowing the shaft H and thecrank its to make a one-half revolution, pressing the sounder-lever Tagainst the upper step g of the sounder Q by means of the uplifting ofthe connecting-rod t, spring 25 and rod i This operation completes themechanical movement of the parts impelled by the energy of the spring Hupon the discharge of the magnet M. Now if the magnet M again attractsthe armature A against the tension of the retractile spring R thearmature A, by means of the rod R, pulls the pivotally-mounted rod Runtil the upper end thereof rests against the limiting-stop L as shownin Fig. 1 thereby allowing the arm a to leave the arm S and to engagewith arm S completing a one-quarter revolution of the stop-pinion m, thearm 7L2 moving from engagement with the pallet 2 of the stop-pinion mand causing the arm h to engage with the pallet 3 of said stop-pinion m,thus permitting the energy of the spring H to revolve the shaft H andthe crank h a one-half revolution with a downward pull on theconnectingrod 25, spring and rod t forcing the sounderlever T down uponits bottom stop (f, the latter resting on theframe Q of the sounder Q,completing the mechanical movement of the parts when the magnet M isattracting the armature A. \Vhen the magnet M again discharges, theretractile spring R pulls the pivotally-mounted rod R and its connectedparts until the upper end thereof rests against the limiting-stop L,allowing the arm S and the arm n to be disengaged by the propellingenergy of the spring H and the arm "n to move to engagement with the armS, the stoppinion m making a one-quarter revolution. The arm n isdisengaged from the pallet 3 of the said stop-pinion m and the arm ofmoves to engagement with the pallet 4c of said stoppinion m therebyallowing the shaft H and the crank 7L3 to complete a one-halfrevolution, pressing the sounder-lever T against the stop (1 of thesounder by means of the uplifting of the connecting-rod t, spring 25 androd 15 This operation completes the mechanical movement of the partsimpelled by the energy of the spring H upon the second discharge of themagnet M.

hen the magnet M again attracts the armature A, said armature, by meansof the rod R, pulls the piVotally-mounted rod R against the tension ofthe retractile spring R until the upper end of the rod R rests againstthe limiting-stop L allowing the arm n to leave the arm S and to engagewith the arm S The stop-pinion on, making a one-quarter revolution,releases the arm h from engagement with the pallet 4 of said stop-pinionm and allows the arm h to engage with the pallet 1 of said stop-pinionm, as shown in Fig. 1, and thereby allowing the energy of the spring IIto revolve the shaft II and crank if a onehalf revolution with adownward pull 011 the connecting-rod 1, spring t and rod and forcing thesounder-lever T down with the bottom stop 1 upon the sounder. This operation completes the mechanical movement of the parts impelled by theenergy of the spring II upon the magnet M attracting the armature A andcompleting the four phases of the one revolution of the stop-pinion m.

We do not restrict ourselves to four pallets 011 the stop-pinionm, asthe mechanical principle involved will admit of any number of palletsbeing used.

Having now fully described our invention, we claim-- 1. A mechanicaltelegraph signaling instrument consisting of an electromagnet, itsarmature, an oscillating lever B connected therewith, a retractilespring R attached to said lever, adjustable stops on opposite side ofsaid lever, a pivot-shaft for said lever, hooked arms S and S secured tosaid shaft and a pivoted arm n to engage with said arms S and S palletsand a crank upon the pivotshaft 172 of the arm 97. a springyconnectingrod unitingsaid crank with a pivoted sounderlever, pivotedarms h 7L2 to engage alternately with the pallets on the shaft m acoiled spring mounted upon the pivot-shaft of the arms h 72, and havingone end connected to a pinion P, with means to rotate said pinionsubstantially as described.

2. In a telegraph signaling instrument the combination of anelectromagnet, its armature, an oscillating escapement connectedtherewith, rotary arms 01 n engaging with said escapement-pallets upontheir shaft, arms h 72, for engagement with said pallets, a shaftcarrying a coiled hair-spring and a crank, a springy connecting-roduniting said crank to a sounding-lever, a pinion connected with thehair-spring and means to rotate said pinion substantially as described.

In a telegraph signaling instrument the combination of an electromagnet,its armature, an oscillating and a rotary escapement with a coiledhair-spring upon the shaft car rying the controlling-arms of the rotaryescapement, a crank upon said shaft, a sounding-lever, a connecting-roduniting said crank with the sounding-lever, a pinion connected with thehair-spring and means to rotate said pinion substantially as described.7

4:. In a telegraph signaling instrument the combination of anelectromagnet, its armature, an escapement connected with said armature,a sounding-lever, a springy connecting-rod uniting said sounding-leverwith a crank upon a shaft carrying a coiled hairspring, a pinionconnected with said hairspring and means to rotate said pinionsubstantially as described.

In testimony whereof we affix our signatures in presence of twowitnesses.

WILLIAM W. ALEXANDER. MANOEILLIA O. GILLHAM. \Vitnesses:

GARRETT ELLISON, D. ELLIsoN.

